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CN115857218A - Liquid crystal phase dry display transparent screen and liquid crystal laser transparent display system - Google Patents

Liquid crystal phase dry display transparent screen and liquid crystal laser transparent display system Download PDF

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Publication number
CN115857218A
CN115857218A CN202211656478.0A CN202211656478A CN115857218A CN 115857218 A CN115857218 A CN 115857218A CN 202211656478 A CN202211656478 A CN 202211656478A CN 115857218 A CN115857218 A CN 115857218A
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China
Prior art keywords
liquid crystal
substrate
electrode layer
facing
layer
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Pending
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CN202211656478.0A
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Chinese (zh)
Inventor
仝召民
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Shanxi University
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Shanxi University
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Priority to CN202211656478.0A priority Critical patent/CN115857218A/en
Priority to JP2023029196A priority patent/JP7493274B1/en
Priority to EP23161492.6A priority patent/EP4390526A1/en
Priority to US18/121,644 priority patent/US11815763B1/en
Publication of CN115857218A publication Critical patent/CN115857218A/en
Priority to CN202311042307.3A priority patent/CN117031812A/en
Priority to US18/511,836 priority patent/US12105374B2/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/17—Multi-pass arrangements, i.e. arrangements to pass light a plurality of times through the same element, e.g. by using an enhancement cavity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/15—Function characteristic involving resonance effects, e.g. resonantly enhanced interaction

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

The invention provides a liquid crystal phase dry display transparent screen and a liquid crystal laser transparent display system, wherein the liquid crystal phase dry display transparent screen comprises: the first substrate and the second substrate are oppositely arranged; the first electrode layer is positioned on one side of the first substrate facing the second substrate; the first partial reflector is positioned on one side of the first electrode layer facing the second substrate; the first alignment layer is positioned on one side of the first partial reflector facing the second substrate; the second electrode layer is positioned on one side, facing the first substrate, of the second substrate; the second partial reflector is positioned on one side, facing the first substrate, of the second electrode layer; the second alignment layer is positioned on one side, facing the first substrate, of the second partial reflector; and the liquid crystal layer is positioned between the first alignment layer and the second alignment layer. The liquid crystal coherent display transparent screen adopts an optical resonance microcavity formed by a first partial reflector and a second partial reflector to replace a polarizer, an analyzer and an optical filter in the prior art, so that the light transmittance of the liquid crystal coherent display transparent screen is improved.

Description

Liquid crystal phase dry display transparent screen and liquid crystal laser transparent display system
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal phase dry display transparent screen and a liquid crystal laser transparent display system.
Background
With the continuous development of scientific technology, various display technologies are widely applied to the life and work of people, and great convenience is brought to the daily life of people.
Among them, the transparent display is a display technology for displaying an image on a transparent medium, which can realize fusion of display content and an application scene, for example, display of the display content on glass and the application scene in a virtual-real combination manner.
The liquid crystal transparent display system mainly comprises a wide-spectrum illumination light source and a liquid crystal transparent display screen, and the basic display principle is that unpolarized wide-spectrum illumination light passes through a polarizer to generate polarized light, the liquid crystal state and the polarization state of the light are changed through an electric field, and the brightness modulation and contrast display are realized by combining an analyzer orthogonal to the polarizer; in addition, in order to generate color image information, the illumination light of a broad spectrum is subjected to a filtering process to generate three primary colors of red, green and blue, and thus, a filter is also used.
Obviously, the existing liquid crystal transparent display system needs to use a polarizer, an analyzer and a filter, so that the light transmittance of the liquid crystal transparent display system is low, and the light transmittance is usually 5% -10%.
Disclosure of Invention
In view of this, in order to solve the above problems, the present invention provides a liquid crystal phase dry display transparent screen and a liquid crystal laser transparent display system, and the technical scheme is as follows:
a liquid crystal phase dry display transparent screen, comprising:
the first substrate and the second substrate are oppositely arranged;
the first electrode layer is positioned on one side, facing the second substrate, of the first substrate;
a first partial reflector located on one side of the first electrode layer facing the second substrate;
a first alignment layer located on a side of the first partial reflector facing the second substrate;
the second electrode layer is positioned on one side, facing the first substrate, of the second substrate;
the second partial reflector is positioned on one side, facing the first substrate, of the second electrode layer;
a second alignment layer on a side of the second partial reflector facing the first substrate;
a liquid crystal layer between the first alignment layer and the second alignment layer.
Preferably, in the above liquid crystal coherent display transparent panel, the first substrate is a glass substrate, and the second substrate is a glass substrate.
Preferably, in the above liquid crystal coherent display transparent screen, the first electrode layer is an indium tin oxide electrode layer, and the second electrode layer is an indium tin oxide electrode layer.
Preferably, in the above liquid crystal coherent display transparent screen, the first alignment layer is a polyimide alignment layer, and the second alignment layer is a polyimide alignment layer.
Preferably, in the above liquid crystal coherent display transparent screen, the first partial reflector is a high refractive index material film layer, and the second partial reflector is a high refractive index material film layer.
A liquid crystal laser transparent display system, comprising:
a light source, an optical assembly and a liquid crystal coherent display transparent screen as described in any of the above.
Preferably, in the above liquid crystal laser transparent display system, the optical assembly includes: a shim optics assembly;
the shimming optical assembly is used for shimming the light emitted by the light source.
Preferably, in the above liquid crystal laser transparent display system, the optical assembly further includes: a shaping optical component;
the shaping optical assembly is used for shaping the light output by the shimming optical assembly.
Preferably, in the above liquid crystal laser transparent display system, the optical assembly further includes: a laser transmission assembly;
the laser transmission component is used for transmitting the light output by the shaping optical component to the liquid crystal coherent display transparent screen.
Preferably, in the above liquid crystal laser transparent display system, the light source is a laser light source.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a liquid crystal phase dry display transparent screen, which comprises: the first substrate and the second substrate are oppositely arranged; the first electrode layer is positioned on one side, facing the second substrate, of the first substrate; a first partial reflector located on one side of the first electrode layer facing the second substrate; a first alignment layer located on a side of the first partial reflector facing the second substrate; the second electrode layer is positioned on one side, facing the first substrate, of the second substrate; the second partial reflector is positioned on one side, facing the first substrate, of the second electrode layer; a second alignment layer on a side of the second partial reflector facing the first substrate; a liquid crystal layer between the first alignment layer and the second alignment layer. The liquid crystal coherent display transparent screen adopts an optical resonance microcavity formed by a first partial reflector and a second partial reflector to replace a polarizer, an analyzer and an optical filter in the prior art, so that the light transmittance of the liquid crystal coherent display transparent screen is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid crystal laser transparent display system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another liquid crystal laser transparent display system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another liquid crystal laser transparent display system according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another liquid crystal laser transparent display system according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another liquid crystal laser transparent display system according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a liquid crystal dry display transparent panel according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a reflection spectrum of a pixel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid crystal laser transparent display system according to an embodiment of the present invention, where the liquid crystal laser transparent display system includes:
a light source 11, an optical assembly 12 and a liquid crystal coherent display transparent screen 13 as described in the embodiments below.
Specifically, in the embodiment of the present invention, light emitted from the light source 11 passes through the optical component 12 and then illuminates the Liquid Crystal coherent Display Transparent screen 13, and the Liquid Crystal coherent Display Transparent screen 13 operates in a reflection mode, as shown in fig. 1, human eyes and objects of an observer are respectively located on the front and the back of the Liquid Crystal coherent Display Transparent screen 13, so that a Liquid Crystal-Laser Transparent Display (LC-LTD) technology without a polarizing element and a filter is implemented.
It should be noted that, in the embodiment of the present invention, the liquid crystal coherent display transparent panel 13 is described as an example of operating in the reflective mode, and it is also possible to operate the liquid crystal coherent display transparent panel 13 in the transmissive mode.
Optionally, in another embodiment of the present invention, referring to fig. 2, fig. 2 is a schematic structural diagram of another liquid crystal laser transparent display system provided in the embodiment of the present invention.
The light source 11 is a laser light source 14.
Specifically, in the embodiment of the present invention, the laser light source 14 is used as an illumination light source of the liquid crystal laser transparent display system, which has the advantages of good monochromaticity, extremely pure color, and the like, and can make the display image have the advantage of large color gamut; and the laser light source 14 emits laser with good directivity, so that higher light efficiency utilization rate can be realized, and the display image has the advantage of high brightness.
Optionally, in another embodiment of the present invention, referring to fig. 3, fig. 3 is a schematic structural diagram of another liquid crystal laser transparent display system provided in the embodiment of the present invention.
The optical assembly 12 includes: a shim optics assembly 15.
The shim optics assembly 15 is used to shim the light emitted by the light source 11.
Optionally, in another embodiment of the present invention, referring to fig. 4, fig. 4 is a schematic structural diagram of another liquid crystal laser transparent display system provided in the embodiment of the present invention.
The optical assembly 12 further comprises: a shaping optical assembly 16.
The shaping optical assembly 16 is used for shaping the light output by the shimming optical assembly 15.
Optionally, in another embodiment of the present invention, referring to fig. 5, fig. 5 is a schematic structural diagram of another liquid crystal laser transparent display system provided in the embodiment of the present invention.
The optical assembly 12 further comprises: a laser delivery assembly 17.
The laser transmission component 17 is used for transmitting the light output by the shaping optical component 16 to the liquid crystal coherent display transparent screen 13.
Optionally, in another embodiment of the present invention, referring to fig. 6, fig. 6 is a schematic structural diagram of a liquid crystal phase dry display transparent screen provided in an embodiment of the present invention.
The liquid crystal coherent display transparent screen 13 includes:
a first substrate 21 and a second substrate 22 disposed opposite to each other.
And a first electrode layer 23 on a side of the first substrate 21 facing the second substrate 22.
A first partially reflective mirror 24 on a side of the first electrode layer 23 facing the second substrate 22.
A first alignment layer 25 on a side of the first partial mirror 24 facing the second substrate 22.
And a second electrode layer 26 on a side of the second substrate 22 facing the first substrate 21.
A second partially reflective mirror 27 on a side of the second electrode layer 26 facing the first substrate 21.
A second alignment layer 28 on a side of the second partial mirror 27 facing the first substrate 21.
A liquid crystal layer 29 between said first alignment layer 25 and said second alignment layer 28.
Specifically, in the embodiment of the present invention, two pixels are taken as an example for explanation, and the basic structure of the liquid crystal coherent display transparent screen 13 is as shown in fig. 6, and mainly includes a first substrate 21, a second substrate 22, a first electrode layer 23, a first partial mirror 24, a first alignment layer 25, a second electrode layer 26, a second partial mirror 27, a second alignment layer 28, and a liquid crystal layer 29, where the first electrode layer 23 and the second electrode layer 26 are used for applying an electric field signal to liquid crystal in the liquid crystal layer 29, and the first alignment layer 25 and the second alignment layer 28 are used for performing an anchoring operation on liquid crystal in the liquid crystal layer 29.
Further, in the embodiment of the present invention, the liquid crystal coherent display transparent screen 13 uses an optical resonant microcavity formed by the first partial reflector 24 and the second partial reflector 27 to replace a polarizer, an analyzer and a filter in the prior art, so as to improve the light transmittance during the liquid crystal transparent display.
As shown in fig. 6, the left pixel is addressed by the first electrode layer 23 and the second electrode layer 26And a voltage signal applied to the pixel at the right side is V on And V off (ii) a Therefore, the liquid crystal state and the liquid crystal equivalent refractive index in the left pixel and the right pixel are different, so that the corresponding optical resonance micro-cavity has different equivalent cavity lengths and reflection spectrums.
Further, referring to fig. 7, fig. 7 is a schematic diagram of a reflection spectrum of a pixel according to an embodiment of the present invention, and fig. 7 is a schematic diagram of a reflection spectrum of a certain pixel of the liquid crystal coherent display transparent screen 13 after applying "full on" and "full off" voltages to the pixel when the laser wavelength is 520 nm.
In fig. 7, the refractive index of the liquid crystal before and after the voltage application is in the range of 1.58 to 1.67, the reflectivities of the first partial mirror 24 and the second partial mirror 27 are 0.15, the thickness of the liquid crystal layer 29 is 1.5 μm, and the incident angle of the laser beam is 9.2 °.
When the pixel is applied with the voltage of full-on, the position of the reflection spectrum peak of the pixel is coincided with the position of the laser wavelength, and the brightness of the pixel is brightest at the moment; when the pixel is applied with the 'full-off' voltage, the bottom position of the reflection spectrum of the pixel is coincident with the position of the laser wavelength, and the brightness of the pixel is darkest.
As can be seen from the above description, the LC-LTD technology without the polarizer and the filter provided in the embodiment of the present invention fully utilizes the high coherence spectrum characteristic of the laser source, and combines with the regulation and control of the equivalent refractive index of the liquid crystal to change the reflection spectrum of the optical resonant microcavity, thereby realizing brightness modulation and contrast display.
Alternatively, in another embodiment of the present invention, the first substrate 21 may be a glass substrate, and the second substrate 22 may be a glass substrate.
The first substrate 21 and the second substrate 22 may also be substrates made of other transparent materials, and in the embodiment of the present invention, the first substrate 21 and the second substrate 22 are both glass substrates.
Optionally, in another embodiment of the present invention, the first electrode layer 23 may be an indium tin oxide electrode layer, and the second electrode layer 26 may be an indium tin oxide electrode layer.
The first electrode layer 23 and the second electrode layer 26 may also be electrode layers made of other transparent materials, and in the embodiment of the present invention, the first electrode layer 23 and the second electrode layer 26 are both indium tin oxide transparent electrode layers.
Alternatively, in another embodiment of the present invention, the first alignment layer 25 may be a polyimide alignment layer, and the second alignment layer 28 may be a polyimide alignment layer.
It should be noted that the first alignment layer 25 and the second alignment layer 28 may also be alignment layers of other common materials, and in the embodiment of the present invention, the first alignment layer 25 and the second alignment layer 28 are both polyimide alignment layers for illustration.
Optionally, in another embodiment of the present invention, the first partial mirror 24 may be a film layer made of a high refractive index material, and the second partial mirror 27 may be a film layer made of a high refractive index material.
Note that the first partial mirror 24 may be a single layer of Ta 2 O 5 The second partial mirror 27 may be a single layer of Ta 2 O 5 Film layers of materials having a high refractive index.
Alternatively, in another embodiment of the present invention, the liquid crystal in the liquid crystal layer 29 is a nematic liquid crystal, for example, a 5CB liquid crystal.
Wherein the first partial mirror 24 and the second partial mirror 27 may be a single layer of Ta 2 O 5 The film layer made of materials with high refractive index has low reflectivity of a reflector formed by the difference of the refractive index and the liquid crystal, so that the liquid crystal laser transparent display system has high light transmittance for incoherent ambient light.
Further, the principle of the liquid crystal dry display transparent screen and the liquid crystal laser transparent display system provided by the embodiment of the present invention is further described in the following by way of a specific embodiment:
when the laser illuminates the optically resonant microcavity, multiple reflections and transmissions will occur at the surfaces of first partial mirror 24 and second partial mirror 27, and multiple beam interference occurs; when the transmitted light is in phase, constructive interference exists, and the transmitted light corresponds to the peak value of the transmission spectrum of the optical resonance microcavity (namely the valley value of the reflection spectrum); destructive interference occurs when the transmitted light is in phase opposition, corresponding to the valleys of the transmission spectrum (i.e., the peaks of the reflection spectrum) of the optically resonant microcavity.
Assuming that the equivalent refractive index of the liquid crystal in the optical resonant microcavity is n, the thickness of the liquid crystal layer 29 is L, and the incident angle of the laser light is θ, the optical path difference Δ L =2 nlcs θ between two adjacent reflected lights.
The phase difference without taking the phase shift into account is δ = (4 π/λ) nlcos θ.
Assuming that the reflectivities of the first partial mirror 24 and the second partial mirror 27 are the same, equal to R, the transmittance function of the optically resonant microcavity is given by the following equation:
Figure BDA0004012999220000081
wherein,
Figure BDA0004012999220000082
the reflectivity of the optically resonant microcavity is R =1-T, regardless of the absorption of light by the medium.
When the voltage of the liquid crystal is changed, liquid crystal molecules rotate and the equivalent refractive index n of the liquid crystal is changed, so that the equivalent cavity length l and the reflection spectrum R of the optical resonance microcavity are changed.
When the laser spectrum is respectively overlapped with the peak and the valley of the reflection spectrum of the optical resonance microcavity, the brightest and darkest images are obtained, and other voltage signals correspond to the intermediate brightness state.
The liquid crystal phase dry display transparent screen and the liquid crystal laser transparent display system provided by the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the above example is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A liquid crystal phase dry display transparent screen, characterized in that, liquid crystal phase dry display transparent screen includes:
the first substrate and the second substrate are oppositely arranged;
the first electrode layer is positioned on one side, facing the second substrate, of the first substrate;
a first partial reflector located on one side of the first electrode layer facing the second substrate;
a first alignment layer located on a side of the first partial reflector facing the second substrate;
the second electrode layer is positioned on one side, facing the first substrate, of the second substrate;
the second partial reflector is positioned on one side, facing the first substrate, of the second electrode layer;
a second alignment layer on a side of the second partial reflector facing the first substrate;
a liquid crystal layer between the first alignment layer and the second alignment layer.
2. The lcd coherent display transparent screen of claim 1, wherein the first substrate is a glass substrate and the second substrate is a glass substrate.
3. The lcd coherent display transparent screen of claim 1, wherein the first electrode layer is an ito electrode layer and the second electrode layer is an ito electrode layer.
4. The lcd coherent display transparent screen of claim 1, wherein the first alignment layer is a polyimide alignment layer and the second alignment layer is a polyimide alignment layer.
5. The lcd coherent display transparent screen of claim 1, wherein the first partial mirror is a high index material film layer and the second partial mirror is a high index material film layer.
6. A liquid crystal laser transparent display system, comprising:
a light source, an optical assembly and a liquid crystal coherent display transparent screen according to any of claims 1 to 5.
7. The liquid crystal laser transparent display system of claim 6, wherein the optical assembly comprises: a shim optics assembly;
the shimming optical assembly is used for shimming the light emitted by the light source.
8. The liquid crystal laser transparent display system of claim 7, wherein the optical assembly further comprises: a shaping optical component;
the shaping optical assembly is used for shaping the light output by the shimming optical assembly.
9. The liquid crystal laser transparent display system of claim 8, wherein the optical assembly further comprises: a laser transmission assembly;
the laser transmission component is used for transmitting the light output by the shaping optical component to the liquid crystal coherent display transparent screen.
10. The liquid crystal laser transparent display system of claim 6, wherein the light source is a laser light source.
CN202211656478.0A 2022-12-22 2022-12-22 Liquid crystal phase dry display transparent screen and liquid crystal laser transparent display system Pending CN115857218A (en)

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